Wow, this game is so polished, and the mechanic concept is so fresh. Maybe thats me being a game ignorant but I havent seen that idea being explored before;
There is so many positive things about this game, The music, The idea itself! the level design.
I find the theme or less blocks in 1st world more in 2nd a bit stretched, but besides that game is solid 8... maybe 9 out of 10!